Vitalii Dyrda, Anatolii Kobets, Ievgeniia Bulat, Serhii Slobodian, Mykola Lysytsia, Serhii Sokol, Vladimir Lapin, Hennadii Ahaltsov. Present problems of vibration isolation in heavy mining machines at long-term cyclic loads

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Parent Category: Geo-Technical Mechanics, 2020

Category: Geo-Technical Mechanics, 2020, № 154

Geoteh. meh. 2020, 154, 26-38

https://doi.org/10.1051/e3sconf/202016800042

 

PRESENT PROBLEMS OF VIBRATION ISOLATION IN HEAVY MINING MACHINES AT LONG-TERM CYCLIC LOADS

¹Vitalii Dyrda, ²Anatolii Kobets, ³Ievgeniia Bulat, ⁴Serhii Slobodian, ¹Mykola Lysytsia, ²Serhii Sokol, ⁵Vladimir Lapin, ¹Hennadii Ahaltsov

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, ²Dnipro State Agrarian and Economic University, ³Prydniprovsky Scientific Center of National Academy of Sciences of Ukraine and of Ministry of Education and Science of Ukraine, ⁴State Agrarian and Engineering University in Podilya, ⁵Kazakh Research and Design Institute of Construction and Architecture

Language: English

Abstract. On the basis of the developed simulation model and the Boltzmann-Volterra integral relations with kernels of relaxation and aftereffect, an equation was worked out, which made it possible to take into account the rubber viscoelastic properties in full volume; in this equation, stiffness operator of elastic suspension in the machine is written by using fractional exponential function of the Yu. Rabotnov’s type; on the basis of the mathematical model, the basic parameters of the machine under the study were calculated; in particular, for the vortex mixer, the time dependences of amplitude of the mixer housing vibrations and coefficient of vibration isolation efficiency were calculated with taking into account aging of elastic link material in the machines; the calculation results were compared with the results of industrial tests of the vortex mixer operation lasting for 16 years. The theory and method for calculating vibration isolation systems with rubber elastic links for heavy mining machines were developed with taking into account material structure changes due to the effects of aging.

REFERENCES:

1. Bulat, A.F., Dyrda, V.I., Zvyagilskiy, Ye.L. (2016). Elastomers in mining. Naukova dumka, Kyiv, Ukraine

2. Zabolotny, K.S., Sirchenko, A.A., Zhupiev, A.L. (2016). Design and analysis of the oscillating system’s of self-propelled feeding bin BPS-940. Vibration in engineering and technology, 2 (82), 16-21, http://vibrojournal.vsau.org/files/pdfa/3011.pdf

3. Yaroshevich, N.P., Zabrodets, I.P., Yaroshevich, T.S. (2015). Dynamics of vibrating machines starting with unbalanced drive in case of bearing body flat vibrations. Scientific Bulletin of National Mining University, 3, 39-45

4. Ilin, S.R., Samusia, V.I., Ilina, I.S., Ilina, S.S. (2016). Influence of dynamic processes in mine hoists on safety of exploitation of shafts with broken geometry. Scientific Bulletin of National Mining University, 3, 48-53

5. V. Dyrda, A. Kobets, Ie. Bulat, V. Lapin, N. Lysytsia, H. Ahaltsov, S. Sokol. Vibroseismic protection of heavy mining machines, buildings and structures. E3S Web of Conferences, International Conference Essays of Mining Science and Practice, 109 (2019). https://doi.org/10.1051/e3sconf/201910900022

6. V. Dyrda, A. Kobets, V. Pukhalskyi, Yu. Kozub, O. Chernii, Dynamics of vibratory partitioned feeders for the uranium ore drawing and feeding. E3S Web of Conferences, International Conference Essays of Mining Science and Practice, 109 (2019). https://doi.org/10.1051/e3sconf/201910900023

7. O. Voloshyn, O. Riabtsev. Some important aspects of rock mechanics and geomechanics. E3S Web of Conferences, International Conference Essays of Mining Science and Practice, 109 (2019). https://doi.org/10.1051/e3sconf/201910900114

8. Bulat, A.F., Dyrda, V.I., Lysytsya, M.I., Grebenyuk, S.M. (2018). Numerical Simulation of the Stress-Strain State of Thin-Layer Rubber-Metal Vibration Absorber Elements Under Nonlinear Deformation. Strength of Materials, 3 (50), 387-395. https://doi.org/10.1007/s11223-018-9982-9

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